350
IIOIIMAN Y. ARAKAWA
Length of pellet (mm)
Breadth of pellet (mm)
Ratio of lengthlbreadth
0-38 0-40 0.40 0-41 0.43 0.43 0.45 0.45
0.21 0.21 0.21 0.21 0.21 0.21 0.21 0.21
1.81 1.91 1.91 1-95 2.05 2.05 2.14 2.14
104. Cione cancellata L.
This specimen, 28 mm long, produced a curved and
twisted rod-shaped pellet with a width of 0.1 mm. It was highly
granular and creamy-white in color. It is possible that the constrictions visible in the feces are an indication of a starvation pellet; this
was not definitely determined as no others were shed." (Manning and
Kumpf, 1959, p. 303, Fig. 3d.) (Pellet-type ?II-4).
105. Callista chinensis (Holten)
Faecal rods of this species are cut by numerous occasionally formed
cracks and are usually shed broken into much shorter pieces (Pellettype 11-4).
Locality : Mukaishima, near Onomichi, Hiroshima, Japan.
Measurements: Pellets voided by an animal with shell 54.0 mm long
are 0.69 mm in breadth.
" 1 animal.
106. Protothaca staminea (Conrad)
Edge (1934, p. 79, Fig. 2) has illustrated the pellet for this species.
The faecal rod shows a definite linear segmentation (Pellet-type IA-3).
107. P . jedoensis (Lischke)
(Pellet-type 4).
Locality : Mukaishima, Hiroshima, Japan.
Measurements: For an animal with a 38.0 mm long shell the pellet is
0.30 mm in breadth.
The pellets of this species are rod-shaped and circular in section
108. Ruditapes philippinarum (Ad. and Rve) (Pl. 4-48)
" This species sheds pellets that are rod-shaped, somewhat sandy in
appearance and roundish in section. They are usually voided together
with a large amount of mucus. They are yellowish-brown in colour and
formed of somewhat coarse detritus mingled with some sand grains.
IIOIIMAN Y. ARAKAWA
Length of pellet (mm)
Breadth of pellet (mm)
Ratio of lengthlbreadth
0-38 0-40 0.40 0-41 0.43 0.43 0.45 0.45
0.21 0.21 0.21 0.21 0.21 0.21 0.21 0.21
1.81 1.91 1.91 1-95 2.05 2.05 2.14 2.14
104. Cione cancellata L.
This specimen, 28 mm long, produced a curved and
twisted rod-shaped pellet with a width of 0.1 mm. It was highly
granular and creamy-white in color. It is possible that the constrictions visible in the feces are an indication of a starvation pellet; this
was not definitely determined as no others were shed." (Manning and
Kumpf, 1959, p. 303, Fig. 3d.) (Pellet-type ?II-4).
105. Callista chinensis (Holten)
Faecal rods of this species are cut by numerous occasionally formed
cracks and are usually shed broken into much shorter pieces (Pellettype 11-4).
Locality : Mukaishima, near Onomichi, Hiroshima, Japan.
Measurements: Pellets voided by an animal with shell 54.0 mm long
are 0.69 mm in breadth.
" 1 animal.
106. Protothaca staminea (Conrad)
Edge (1934, p. 79, Fig. 2) has illustrated the pellet for this species.
The faecal rod shows a definite linear segmentation (Pellet-type IA-3).
107. P . jedoensis (Lischke)
(Pellet-type 4).
Locality : Mukaishima, Hiroshima, Japan.
Measurements: For an animal with a 38.0 mm long shell the pellet is
0.30 mm in breadth.
The pellets of this species are rod-shaped and circular in section
108. Ruditapes philippinarum (Ad. and Rve) (Pl. 4-48)
" This species sheds pellets that are rod-shaped, somewhat sandy in
appearance and roundish in section. They are usually voided together
with a large amount of mucus. They are yellowish-brown in colour and
formed of somewhat coarse detritus mingled with some sand grains.